A device for removing defective products from a high-speed wire square billet and a control method thereof

Abstract

This invention discloses a scrap removal device for high-speed wire rod billet unloading, relating to the field of wire rod billet technology. The device includes two claws, four scrap removal stands, two hydraulic cylinders, a mechanical stop block, a hydraulic cylinder support, hydraulic valves, a coupling, and a hydraulic cylinder base. Through the cooperation of the hydraulic cylinders, coupling, and proximity switches, the device can automatically complete the receiving, positioning, and scraping of steel billets. The unloading time for a single steel billet is only 56 seconds. The mechanical stop block provides physical limits, and a laser rangefinder enables precise positioning of the steel billet. The claws move synchronously through the coupling, avoiding safety hazards such as billet deviation and impact during manual operation. It also reduces the safety threat posed by high-temperature steel billets to personnel. The four scrap removal stands can stably store up to seven steel billets temporarily, eliminating the need for frequent hoisting. This ensures the continuity of the unloading operation, reduces the frequency of overhead crane hoisting, and indirectly reduces equipment wear and safety risks.

Description

Technical Field

[0001] This invention relates to the field of wire rod billet technology, and in particular to a waste removal device and control method for high-speed wire rod billet unloading. Background Technology

[0002] When a rolling mill malfunctions and needs to be shut down to tap steel and carry out troubleshooting, if the steel billets in the furnace are heated to overheated for a long time, a decarburized layer will be generated, which will directly affect the performance of the finished product after rolling. Therefore, the remaining steel billets in the furnace need to be removed in time, treated by the grinding process, and then reloaded into the furnace.

[0003] Currently, billet removal requires multiple steps, including the retraction of the furnace walking beam, the reversal of the furnace roller conveyor, and the retraction of the feeding platform. This process is time-consuming, and often the billet removal is not completed even after troubleshooting, which seriously affects production efficiency. Therefore, we propose a scrap removal device and control method for high-speed wire rod billet removal. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a waste removal device and control method for high-speed wire rod billet exiting the furnace. This can solve the problem that the current billet exit requires multiple processes such as the retraction of the heating furnace walking beam, the reversal of the furnace roller conveyor, and the retraction of the feeding platform, which is time-consuming and often the billet exit is not completed even after the fault is dealt with, which seriously affects the efficiency of production connection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste removal device for high-speed wire rod billet unloading, comprising: Two claws, four scrap removal stands, two hydraulic cylinders, mechanical stop blocks, hydraulic cylinder brackets, hydraulic valves, couplings, and hydraulic cylinder bases; Both hydraulic cylinders are fixedly installed via hydraulic cylinder brackets.

[0006] Preferably, proximity switches are provided on the outer surfaces of the connection positions between the two hydraulic cylinders and the corresponding claws, and the two proximity switches are used to detect the original position and the stop position of the claws, respectively.

[0007] Preferably, the two claws can perform a 30° rotational movement from their original position to the stop position.

[0008] Preferably, both of the claws are connected by a coupling to achieve synchronous operation.

[0009] Preferably, the hydraulic valve is mounted on the base of the hydraulic cylinder.

[0010] A control method for a high-speed wire rod billet tapping and scrap removal device includes the following steps: Step 1: When an equipment or process accident occurs on the rolling line and the furnace needs to be annealed, open the heat insulation cover of the decoupling roller table, trigger the furnace annealing command on the main control panel interface, interlock control the rolling mill to stop, and start the heating furnace walking beam to perform the normal step steel tapping. Step 2: When the billet is transferred to the furnace cantilever roller, the furnace cantilever roller transports the billet to the de-heading roller conveyor at a speed of 1.5 m / s; Step 3: When the laser rangefinder at the entrance of the billet conveyor detects the head of the billet, the billet conveyor slows down to 1 m / s to avoid the billet traveling too fast. Step 4: When the laser rangefinder at the exit of the de-rolling roller conveyor detects the head of the billet, the de-rolling roller conveyor stops operating; Step 5: Send an action signal to the hydraulic valve to control the pawl to start moving from its original position; the proximity switch at the original position is used to detect the initial position of the pawl. Step 6: When the pawl moves the billet onto the scrap removal table, the proximity switch at the stop position is activated, triggering the pawl reset action and causing the pawl to return to its original position. Step 7: When the proximity switch at the original position detects that the claw has returned to its original position, the heating furnace begins to output the next steel billet. Repeat steps 2 to 7 to complete the continuous furnace annealing operation. Step 8: When the number of steel billets on the scrap removal platform reaches 7, the steel billets are lifted off as a whole by an overhead crane.

[0011] Preferably, the total time for a single steel billet from being transferred to the furnace cantilever roll to being returned to the scrap removal table is 56 seconds.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This high-speed wire rod billet unloading and scrap removal device, through the cooperation of hydraulic cylinders, couplings and proximity switches, can automatically complete the receiving, positioning and material removal of steel billets. The unloading time for a single steel billet is only 56 seconds. Mechanical stop blocks provide physical limits, laser rangefinders achieve precise positioning of steel billets, and the claws move synchronously through the coupling, avoiding safety hazards such as steel billet deviation and impact during manual operation. At the same time, it reduces the safety threat of high-temperature steel billets to personnel. The four scrap removal stands can stably store up to 7 steel billets temporarily without frequent hoisting. This not only ensures the continuity of unloading operations, but also reduces the frequency of overhead crane hoisting, indirectly reducing equipment wear and safety risks.

[0013] 2. The control method for the high-speed wire rod billet unloading and scrap removal device is fully automated through electrical interlocks and sensors, from triggering the unloading command to billet hoisting. This eliminates the need for continuous manual operation in high-temperature areas, significantly reducing labor intensity and operational risks. Based on the speed switching logic of the laser rangefinder and the claw reset trigger mechanism of the proximity switch, it ensures precise connection between billet conveying, positioning, and material handling actions, avoiding mechanical impact and operational malfunctions, thus improving equipment stability. After the claw resets, the cycle logic automatically triggers the next billet unloading. Combined with the batch temporary storage design on the platform, it ensures the continuity of the unloading operation, avoiding the process interruption problem of reverse-step retraction of the walking beam in traditional unloading methods. After the unloading command is triggered, the mill is automatically stopped to prevent conflicts between billet conveying and rolling line operation. When the platform is full, it automatically prompts for hoisting, avoiding the risk of billet overflow and further improving the safety of the production process. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Reference numerals in the attached drawings: 1. Claw; 2. Waste removal stand; 3. Hydraulic cylinder; 4. Mechanical stop block; 5. Hydraulic cylinder bracket; 6. Hydraulic valve; 7. Coupling; 8. Proximity switch; 9. Hydraulic cylinder base. Detailed Implementation

[0016] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] Please see Figure 1 This invention provides a technical solution: a waste removal device for high-speed wire rod billet unloading, comprising: Two claws 1, four scrap removal stands 2, two hydraulic cylinders 3, mechanical stop blocks 4, hydraulic cylinder brackets 5, hydraulic valves 6, couplings 7 and hydraulic cylinder bases 9; Both hydraulic cylinders 3 are fixedly installed by hydraulic cylinder brackets 5. The outer surface of the connection position between the two hydraulic cylinders 3 and the corresponding claw 1 is provided with proximity switches 8. The two proximity switches 8 are used to detect the original position and the stop position of the claw 1 respectively. The two claws 1 can perform a 110° rotational movement from the original position to the stop position.

[0021] Both claws 1 are connected by couplings 7 to achieve synchronous operation. The hydraulic valve 6 is installed on the hydraulic cylinder base 9. The waste removal device is installed on the right side of the de-rolling roller conveyor on the furnace side. A laser rangefinder is also installed at the left inlet and outlet positions of the de-rolling roller conveyor.

[0022] A control method for a high-speed wire rod billet tapping and scrap removal device includes the following steps: Step 1: When an equipment or process accident occurs on the rolling line and the furnace needs to be annealed, open the heat insulation cover of the decoupling roller table, trigger the furnace annealing command on the main control panel interface, interlock control the rolling mill to stop, and start the heating furnace walking beam to perform the normal step steel tapping. Step 2: When the billet is transferred to the furnace cantilever roller, the furnace cantilever roller transports the billet to the de-heading roller conveyor at a speed of 1.5 m / s; Step 3: When the laser rangefinder at the entrance of the billet conveyor detects the head of the billet, the billet conveyor slows down to 1 m / s to avoid the billet traveling too fast. Step 4: When the laser rangefinder at the exit of the de-rolling roller conveyor detects the head of the billet, the de-rolling roller conveyor stops operating; Step 5: Send an action signal to the hydraulic valve 6 to control the pawl 1 to start moving from its original position; the proximity switch 8 at the original position is used to detect the initial position of the pawl 1. Step 6: When the pawl 1 moves the billet onto the scrap removal table 2, the proximity switch 8 at the stop position is activated, triggering the pawl 1 to reset and return it to its original position. Step 7: When the proximity switch 8 detects that the claw 1 has returned to its original position, the heating furnace starts to output the next steel billet. Repeat steps 2 to 7 to complete the continuous furnace annealing operation. Step 8: When the number of steel billets on the scrap removal platform 2 reaches 7, the steel billets are lifted off as a whole by the overhead crane.

[0023] The total time for a single steel billet to be transferred from the furnace to the cantilever roll to the scrap removal stand 2 is 56 seconds.

[0024] Furthermore, when using this device, the hydraulic cylinder 3 serves as the power source and is fixed by the hydraulic cylinder bracket 5. Its output end drives the claw 1 to rotate 110°. The two claws 1 are rigidly connected by the coupling 7 to ensure that the actions are completely synchronized and that the billet is moved smoothly and evenly.

[0025] Two proximity switches 8 are installed at the connection point between the hydraulic cylinder 3 and the pawl 1 to detect the original and stopped positions of the pawl, respectively. A mechanical stop block 4 provides a physical limit for the pawl 1 to prevent overtravel. The hydraulic valve 6 is installed on the hydraulic cylinder base 9 and is responsible for controlling the extension and retraction direction and speed of the hydraulic cylinder 3.

[0026] Four scrap removal platforms 2 are arranged in an array to receive steel billets transferred by claws 1. Their structural strength and spacing design allow for the stable stacking of up to 7 steel billets, facilitating subsequent overall hoisting by overhead crane.

[0027] When an equipment or process accident occurs on the rolling line, the operator triggers the furnace withdrawal command on the main control console. The system will interlock and control the rolling mill to stop, and start the heating furnace walking beam to perform the normal step-by-step steel tapping, transferring the steel billet to the furnace cantilever roll.

[0028] The cantilever roll at the furnace transports the billet to the decoupling roller conveyor at a speed of 1.5 m / s. When the inlet laser rangefinder detects the head of the billet, the roller conveyor decelerates to 1 m / s to prevent the billet from being impacted or deviated due to excessive speed. When the outlet laser rangefinder detects the head of the billet, the roller conveyor stops immediately, so that the billet is accurately positioned in the working area of ​​the claw 1.

[0029] After the roller conveyor stops, the system sends an action signal to the hydraulic valve 6, which drives the hydraulic cylinder 3 to extend and rotate the claw 1 from its original position to the stop position, pushing the billet into the scrap removal table 2. When the stop position proximity switch 8 detects that the billet is in position, the hydraulic valve 6 reverses, drives the hydraulic cylinder 3 to retract, and the claw 1 returns to its original position.

[0030] When the in-situ proximity switch 8 detects that the claw 1 has been reset, the system triggers the heating furnace to output the next steel billet, repeating the above conveying and tossing process. When the number of steel billets on the scrap removal platform 2 reaches 7, the overhead crane hoisting command is issued to lift the entire batch of steel billets away, completing one furnace annealing cycle.

[0031] Through the cooperation of hydraulic cylinder 3, coupling 7 and proximity switch 8, the receiving, positioning and material handling of steel billets can be completed automatically. The time for a single steel billet to be annealed is only 56 seconds. Mechanical stop block 4 provides physical limit, laser rangefinder realizes precise positioning of steel billet, and claw 1 moves synchronously through coupling 7, avoiding safety hazards such as steel billet deviation and impact during manual operation, while reducing the safety threat of high-temperature steel billets to personnel. Four scrap removal stands 2 can stably store up to 7 steel billets temporarily without frequent hoisting, which not only ensures the continuity of annealing operation, but also reduces the frequency of overhead crane hoisting, indirectly reducing equipment wear and safety risks.

[0032] The entire process, from triggering the annealing command to billet hoisting, is automated through electrical interlocks and sensors. This eliminates the need for continuous manual operation in high-temperature areas, significantly reducing labor intensity and operational risks. Based on the speed switching logic of the laser rangefinder and the claw reset trigger mechanism of proximity switch 8, precise coordination of billet conveying, positioning, and hoisting actions is ensured, avoiding mechanical impact and operational malfunctions, thus improving equipment stability. After the claw resets, the cycle logic automatically triggers the next billet output. Combined with the batch temporary storage design on the rack, the continuity of the annealing operation is guaranteed, avoiding the process interruption caused by the reverse step-by-step retraction of the walking beam in traditional annealing methods. After the annealing command is triggered, the mill is automatically stopped to prevent conflicts between billet conveying and rolling line operation. When the rack is full, hoisting is automatically prompted to avoid the risk of billet overflow, further enhancing the safety of the production process.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A scrap removal device for high-speed wire rod billet unloading, characterized in that, include: Two claws (1), four scrap removal stands (2), two hydraulic cylinders (3), mechanical stop blocks (4), hydraulic cylinder brackets (5), hydraulic valves (6), couplings (7) and hydraulic cylinder bases (9); Both hydraulic cylinders (3) are fixedly installed via hydraulic cylinder brackets (5).

2. The scrap removal device for high-speed wire rod billet tapping according to claim 1, characterized in that: The outer surfaces of the connection positions of the two hydraulic cylinders (3) and the corresponding claws (1) are respectively provided with proximity switches (8), and the two proximity switches (8) are used to detect the original position and the stop position of the claws (1).

3. A scrap removal device for high-speed wire rod billet unloading according to claim 2, characterized in that: The two pawls (1) can perform a 110° rotational movement from the home position to the stop position.

4. A scrap removal device for high-speed wire rod billet unloading according to claim 1, characterized in that: Both of the aforementioned claws (1) are connected by a coupling (7) to achieve synchronous operation.

5. A scrap removal device for high-speed wire rod billet unloading according to claim 1, characterized in that: The hydraulic valve (6) is mounted on the hydraulic cylinder base (9).

6. A control method for a high-speed wire rod billet tapping and scrap removal device, characterized in that, Includes the following steps: Step 1: When an equipment or process accident occurs on the rolling line and the furnace needs to be annealed, open the heat insulation cover of the decoupling roller table, trigger the furnace annealing command on the main control panel interface, interlock control the rolling mill to stop, and start the heating furnace walking beam to perform the normal step steel tapping. Step 2: When the billet is transferred to the furnace cantilever roller, the furnace cantilever roller transports the billet to the de-heading roller conveyor at a speed of 1.5 m / s; Step 3: When the laser rangefinder at the entrance of the billet conveyor detects the head of the billet, the billet conveyor slows down to 1 m / s to avoid the billet traveling too fast. Step 4: When the laser rangefinder at the exit of the de-rolling roller conveyor detects the head of the billet, the de-rolling roller conveyor stops operating; Step 5: Send an action signal to the hydraulic valve (6) to control the pawl (1) to start moving from its original position; the proximity switch (8) at the original position is used to detect the initial position of the pawl (1); Step 6: When the pawl (1) moves the billet onto the scrap removal table (2), the proximity switch (8) at the stop position is activated, triggering the pawl (1) to reset and return to its original position. Step 7: When the proximity switch (8) in the original position detects that the claw (1) has returned to the original position, the heating furnace starts to output the next steel billet, and repeats steps 2 to 7 to complete the continuous furnace annealing operation; Step 8: When the number of steel billets on the scrap removal platform (2) reaches 7, the steel billets are lifted off as a whole by the overhead crane.

7. The control method for a high-speed wire rod billet tapping and scrap removal device according to claim 6, characterized in that: The total time for a single steel billet from being transferred to the furnace cantilever roll to being returned to the scrap removal table (2) is 56s.

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